What you need are placemark files which come as .kml files and many are available online
These are added as follows:
Import your KML map data into Google Earth- Using the web browser on your computer, open Google Earth.
- On the left, click Projects .
- Click the New Project button. To add a file directly to your computer, select Import KML File.
- Select the KML file you'd like to view.
Google search will reveal plenty available for download
e.g.
Downloads - UK Airfields
UK Airfield Catalogue
Once loaded into Google Earth, these overrides can be switched on or off using a tick box in the side panel under "places"